From womensweekly.com.au
By Ashleigh Austen
From the impact of sugar to whether or not it’s genetic, an expert sets the record straight
Diabetes is one of Australia’s most common chronic conditions, yet it remains widely misunderstood.
More often than not, ideas about who gets diabetes, how it develops and what living with it really involves are shaped more by outdated stereotypes than medical fact. That confusion matters: it can delay diagnosis, fuel stigma and make an already demanding condition harder to manage.
Here, we unpack eight of the most persistent myths about diabetes and explain what the evidence actually tells us.
Myth 1: Type 1 diabetes is caused by eating too much sugar
This is one of the most damaging myths of all. Type 1 diabetes (T1D) has nothing to do with diet or lifestyle. It is a chronic autoimmune condition that occurs when the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. Without insulin, the body cannot regulate blood glucose levels, making lifelong insulin therapy essential.
“In type 1 diabetes, the immune system mistakenly attacks the insulin-producing cells in the pancreas, resulting in the person losing the ability to produce their own insulin. Sugar or ‘junk food’ does not cause this autoimmune process,” explains endocrinologist Dr Ben Nash, who lives with type 1 diabetes.
No amount of sugar intake causes T1D. The condition develops silently over many years, often long before symptoms appear. Blaming food choices not only spreads misinformation but also places unnecessary guilt on people living with the condition.

Myth 2: Type 1 diabetes only affects children
While T1D is often diagnosed in childhood, it can develop at any age. Each year, around 3,000 Australians – many of them children – are diagnosed with T1D, which is the equivalent of eight people every day. However, adults are also diagnosed, sometimes well into later life.
“Approximately 50 per cent of people with type 1 diabetes are diagnosed in adulthood, yet many still think of it as a childhood condition,” says Dr Nash.
This misconception matters. “Adults with symptoms such as weight loss, thirst, fatigue, or frequent urination are often misdiagnosed with type 2 diabetes. Delayed diagnosis can lead to serious illness, including diabetic ketoacidosis, a diabetes emergency that can be life-threatening.”
Myth 3: Diabetes always runs in families
Family history does play a role, but it is far from the whole story. Approximately 90 per cent of people diagnosed with T1D have no known family history of the condition. That means most diagnoses come as a complete shock.
Dr Nash explains: “There is a genetic component, but 9 out of 10 people with type 1 diabetes have no family history.” While certain genes are associated with increased risk, “having these genes alone is not enough to cause someone to develop type 1 diabetes.”
Instead, “it is thought that an additional environmental trigger, in addition to genetic factors work together to cause type 1 diabetes to develop.”
Myth 4: You can ‘outgrow’ type 1 diabetes
Type 1 diabetes is lifelong. Because the body permanently loses its ability to produce insulin, there is currently no cure and no way to outgrow the condition.
“Once the immune system destroys insulin-producing cells, the body cannot regenerate them,” says Dr Nash. “That’s why people with T1D must give themselves insulin every day.”
Management requires daily insulin, careful monitoring of blood glucose levels and constant decision-making, a reality that is often underestimated by those who don’t live with the condition.
Myth 5: Insulin means you’ve failed to manage diabetes properly
This myth is particularly misleading when it comes to T1D. People with type 1 diabetes need insulin to survive, full stop.
“Insulin is essential for people living with type 1 diabetes because their bodies are no longer able to produce it,” says Dr Nash. “In type 1 diabetes, insulin is simply replacing a hormone the body no longer makes.”
Without insulin, blood glucose levels rise dangerously and can quickly lead to diabetic ketoacidosis (DKA), a life-threatening complication and a leading cause of hospitalisation for people with T1D.

Myth 6: People with diabetes can’t live full, active lives
Living with diabetes is demanding, but with appropriate treatment and support, people with T1D can and do live full, active lives.
“Living well with type 1 diabetes means people can pursue careers, travel, exercise, and spend time with family without limits,” says Dr Nash. “Advances in diabetes technology has made this more possible than ever.”
However, he notes that much of the effort involved goes unseen. “The invisible work includes constant monitoring, planning ahead, carrying supplies and making decisions that most people never think about.”
Myth 7: The symptoms are always obvious
Classic symptoms such as excessive thirst, frequent urination and unexplained weight loss are well known, but they don’t always appear suddenly or clearly.
“These symptoms can develop gradually and be mistaken for stress, viral illness, menopause, or other conditions,” says Dr Nash.
If insulin is not started in time, high blood glucose levels can escalate rapidly into DKA. “Delayed diagnosis can lead to serious illness, such as diabetic ketoacidosis, a medical emergency that results from inadequate insulin levels to meet the needs of the person with diabetes.”
Myth 8: Diabetes isn’t that expensive to manage
The financial burden of type 1 diabetes in Australia is substantial and increasing. Ongoing costs include insulin, glucose monitoring supplies, medical appointments and, for many families, lost income due to reduced work capacity. These costs are lifelong, reflecting the permanent nature of the condition.


